Salvaging apparatus



H. D. DEAM. SALVAGING APPARATUS;

APPLlcATloN FILED MAY 6, g1/g.

Patented May 4;, 1920.

HENRY D. DEAM, OF BENTON HARBOR, MICHIGAN.

sALvAGING Arrnnn'rus.

Specification of Letters Patent.

Patented May 4, 1920.

Application 1ed May 6, 1918. Serial No. 232,677. l

To @ZZ whom t may concern:

Be it known that I, HENRY D. DEAM, a citizen of the United States, residing at Benton Harbor, in the county of Berrien and State of Michigan, have invented cerof the sea is muddy, as is often the case, it

is a diflicult matter to attach to the boat apparatus which will not pull loose when the attempt is made to raise the boat. In view of this I provide apparatus comprising special means for gripping or connecting to the boat.

Of the accompanying drawings, Figure 1 is a general view of apparatus attached to a boat, and means for elevating the boat, which embody the features of my invention. Fig. 2 is a plan view of a ring used in connection with the apparatus; and Fig. 3 is a section of the ring along the line 6-6 of Fig. 2.

In raising sunken boats it becomes desirable to attach apparatus to the boat at various points, so as to keep the boat from listing too much, or to tilt it in various ways in order to prevent the apparatus from slipping or breaking away from the boat.

Assuming the sunken boat 10 is not too deeply embedded in the mud, I first pass under the bow, 11 and the stern 12 the respective cables 13 and 14. Any suitable method may be used in placing these cables. The cables may be dragged on the ground, by the scows 15 and 16, until the cables pass under the end of the boat. Or divers or salvaging submarines may be used to assist in putting the cables in place. Having placed the cables the' four ends are brought together in one of the scows and passed up through an opening 17, and each pair of cables is attached to any suitable elevating means such as the windlasses 18 and 19.l A hingedring 2O is then opened by removing the bolt 21, closed around the four cables, and locked closed by replacing the bolt, and the ring is allowed to slip downwardly on the cables. Fixed to this ring is a cord 22 .which 'serves as a means for indicating the depth to which the ring descends, and which may be used to raise or to assist in lowering the ring. The purpose of the ring is to hold the cables together so as to prevent them from slipping off the boat, and for this reason the depth to which the ring descends on the cables is important. Teeth 23 are provided on the rings to prevent them from slipping upwardly when tension is applied to the cables to raise the boat.

A second pair of cables 24 and 25 is then applied to the boat in a similar manner and connected to another scow 26, or to another portion of the same scow; so as to control the tilting of the boat, and thus prevent any of the cables from slipping.

When the boat has been lifted from the ground it may happen Vthat some of the lifting means begin to yield, or for some reason are deficient; or other lifting means may be necessary. In such an event cables 46 may be passed under the boat, with rings 20 holding the cables snugly against the sides of the boat. The boat will then be firmly held and can be raised to a height where it can be floated by the use of any suitable means. The means which I prefer for floating the boat, and, if desired, for assisting in lifting the boat, are fully described in my copending applications Serial Nos. 223136 and 228292, filed, respectively, March 18,' 1918, and April 13, 1918. If the suction on the boat due to mud is excessive, any suitable means, such as suction dredges, may be used to reduce the suction, and thus assist the ele vating means.

I claim as my invention:

1. Boat salvaging means comprising a buoyant member, pulling means supported by said member, a cable passing from said pulling means downwardly and around a boat' to be raised and back to said buoyant member, and means slidably encircling the two cable strands above said boat, said means comprising a ring having teeth on one side, said teeth arranged to prevent slipping of the ring on the cable.

2. Boat salvaging means comprising a buoyant member, pulling means supported by said member, a cable passing from said pulling means downwardly and around a boat to be raised and back to said buoyant member, means slidably encircling the two cable strands above said boat, and means to prevent said encircling means from slipmember, clasping means slidably encircling ping upwardly on said cable strands when the two cable strands above said boat, and

said ulling means is operated. means for determining and controlling the 3. oat salvaging means comprising 'a distance said clasping means slides down- 5 buoyant member, pulling means supported wardly on said cables.

by said member, a cable passing from said In testimony whereof, I hereunto set my pulling member downwardly and around a hand. boat to be raised and back to said buoyant -HENRY D. DEAM. 

